České a bulharské texty and "I tazi kniga izliza s ljubeznata podkrepa na Češkija centăr v Sofija, i otnovo ce ražda v Universitetskata pečatnica" - titul. list
Mutual Awarensess Through Solidarity and Unity. Surveying Cultural Relations Between the Czechs and The Bulgarians up to the Establishment of Czechoslovakia.